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jessie.dazzle wrote:

For a lot of reasons, I'd vote for an alternate placement. You've got that basement, so why not use it as a rear chamber? You might be able to use the volume "as is", without building a proper rear chamber. In this case, assuming stereo configuration, do you think it would be necessary to separate the basement into two volumes so the drivers do not communicate with each other via the basement?

Yes, there are many reasons why I'd vote for an alternate placement for LF section/s as well. Still the location I describe has some very important benefits at this moment: 1) It will not stress the suspended floor in my listening room 2) I need to do nothing to make it work as I do have the enclosures and amplification.

jessie.dazzle wrote:

With regard to power; In my case, in a room that appears larger than your current space, 100 watts for each driver (2 x M1.1) seems to be more than enough; driver sensitivity is nothing special; 94db. I'd expect the amps could run 4 of these drivers with no problem; it would be easy enough to connect the pair to a single amp and find out. I can do it if you want.

I do not know anything about your LF section. What do you use and where does it crossed?

jessie.dazzle wrote:

I only know of one; if we can believe the specs, the McCauley 6174 has Fs at 20Hz.

oxric wrote:

I appears to me that hoping that the first aesthetically pleasing location for your LF driver will actually work in practice is an extreme form of wishful thinking on your part, but I may be wrong and the laws of probability may well be working in your favour. On the other hand, a driver that will probably meet with contempt by many but nonetheless looks on paper quite promising is the Maelstrom-21, with a Fs of around 16.3Hz, if that can be believed. At a price of under $600 apiece, it gives you the option of creating a Geddes based array or a 2-3 driver set-up for very little expense and frees more time and energy analysing and optimising their placement in your room. You can follow the link below. http://www.diycable.com/main/pdf/M21.pdf A speaker designer that I know in the UK has also pointed me to the Volt Radial RV4504 from a reputable manufacturer which seems to be beautifully designed/built and with plenty of thought given to addressing the heat issues, see below, albeit with a Fs of 33Hz. But the designer might be willing to do something fairly custom for you if you want to push the boat out here.  http://www.voltloudspeakers.co.uk/About_Us/about_us.html

Rakesh, thanks, I never heard those drivers I will look into them. My wishful thinking was not only wishful thinking but also a desire to use an existing solution for modeling or ay least temporary use of what I already have. I kind of sick for now building the things and I want this stage to pass. I need a little break from construction phase. The life is going away and I keep building the things… I am too tired from this. My playback in disabled mode for moths and for some time did not have quality time at my home with Sound. I kind of am missing it…. I kind of knew that it will come when I bought the new house but I think I am at final stage. I am planning to make the playback to work with midbass horn and place my woofers in the place behind the middle poll. I might even use the digital EQ to drive it.

I would like to live with it for a while, to get good sound, to setup my analog, to setup electricity, setup speaker positioning… I will research the subject of killer drivers and strategies with LF channels but I think that my existing LF sections will be good to prototype of what I might get. I never had 42Hz horn and I do not know how the 30Hz LF channel need to work in context of horn. I do feel that will need a direct radiator under the bottom but I at this point I do not know specifics….

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